package com.jiangjupeng46.mapper;

import com.jiangjupeng46.pojo.Coach;
import java.util.List;

public interface CoachMapper {
    // 添加教练
    int insert(Coach coach);
    
    // 删除教练
    int delete(Integer id);
    
    // 更新教练信息
    int update(Coach coach);
    
    // 根据ID查询教练
    Coach selectById(Integer id);
    
    // 查询所有教练
    List<Coach> selectAll();
}